Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a bit more MM

 - procfs updates

 - dynamic-debug fixes

 - lib/ updates

 - checkpatch

 - epoll

 - nilfs2

 - signals

 - rapidio

 - PID management cleanup and optimization

 - kcov updates

 - sysvipc updates

 - quite a few misc things all over the place

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (94 commits)
  EXPERT Kconfig menu: fix broken EXPERT menu
  include/asm-generic/topology.h: remove unused parent_node() macro
  arch/tile/include/asm/topology.h: remove unused parent_node() macro
  arch/sparc/include/asm/topology_64.h: remove unused parent_node() macro
  arch/sh/include/asm/topology.h: remove unused parent_node() macro
  arch/ia64/include/asm/topology.h: remove unused parent_node() macro
  drivers/pcmcia/sa1111_badge4.c: avoid unused function warning
  mm: add infrastructure for get_user_pages_fast() benchmarking
  sysvipc: make get_maxid O(1) again
  sysvipc: properly name ipc_addid() limit parameter
  sysvipc: duplicate lock comments wrt ipc_addid()
  sysvipc: unteach ids->next_id for !CHECKPOINT_RESTORE
  initramfs: use time64_t timestamps
  drivers/watchdog: make use of devm_register_reboot_notifier()
  kernel/reboot.c: add devm_register_reboot_notifier()
  kcov: update documentation
  Makefile: support flag -fsanitizer-coverage=trace-cmp
  kcov: support comparison operands collection
  kcov: remove pointless current != NULL check
  kernel/panic.c: add TAINT_AUX
  ...

10 files changed, 45 insertions, 43 deletions

diff --git a/drivers/misc/lkdtm_bugs.c b/drivers/misc/lkdtm_bugs.c
index b0f7af872bb5..7eebbdfbcacd 100644
--- a/drivers/misc/lkdtm_bugs.c
+++ b/drivers/misc/lkdtm_bugs.c
@@ -63,9 +63,11 @@ void lkdtm_BUG(void)
 	BUG();
 }
 
+static int warn_counter;
+
 void lkdtm_WARNING(void)
 {
-	WARN_ON(1);
+	WARN(1, "Warning message trigger count: %d\n", warn_counter++);
 }
 
 void lkdtm_EXCEPTION(void)
diff --git a/drivers/pcmcia/sa1111_badge4.c b/drivers/pcmcia/sa1111_badge4.c
index 2f490930430d..93a5c7423d80 100644
--- a/drivers/pcmcia/sa1111_badge4.c
+++ b/drivers/pcmcia/sa1111_badge4.c
@@ -144,6 +144,7 @@ int pcmcia_badge4_init(struct sa1111_dev *dev)
 				 sa11xx_drv_pcmcia_add_one);
 }
 
+#ifndef MODULE
 static int __init pcmv_setup(char *s)
 {
 	int v[4];
@@ -158,3 +159,4 @@ static int __init pcmv_setup(char *s)
 }
 
 __setup("pcmv=", pcmv_setup);
+#endif
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c
index 665d9e94a7e1..ec4bc1515f0d 100644
--- a/drivers/rapidio/devices/rio_mport_cdev.c
+++ b/drivers/rapidio/devices/rio_mport_cdev.c
@@ -959,9 +959,10 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,
 
 	nents = dma_map_sg(chan->device->dev,
 			   req->sgt.sgl, req->sgt.nents, dir);
-	if (nents == -EFAULT) {
+	if (nents == 0) {
 		rmcd_error("Failed to map SG list");
-		return -EFAULT;
+		ret = -EFAULT;
+		goto err_pg;
 	}
 
 	ret = do_dma_request(req, xfer, sync, nents);
diff --git a/drivers/rapidio/switches/idt_gen2.c b/drivers/rapidio/switches/idt_gen2.c
index e67b923b1ca6..4931ed790428 100644
--- a/drivers/rapidio/switches/idt_gen2.c
+++ b/drivers/rapidio/switches/idt_gen2.c
@@ -458,7 +458,7 @@ static void idtg2_remove(struct rio_dev *rdev)
 	idtg2_sysfs(rdev, false);
 }
 
-static struct rio_device_id idtg2_id_table[] = {
+static const struct rio_device_id idtg2_id_table[] = {
 	{RIO_DEVICE(RIO_DID_IDTCPS1848, RIO_VID_IDT)},
 	{RIO_DEVICE(RIO_DID_IDTCPS1616, RIO_VID_IDT)},
 	{RIO_DEVICE(RIO_DID_IDTVPS1616, RIO_VID_IDT)},
diff --git a/drivers/rapidio/switches/idt_gen3.c b/drivers/rapidio/switches/idt_gen3.c
index c5923a547bed..85a3908294d9 100644
--- a/drivers/rapidio/switches/idt_gen3.c
+++ b/drivers/rapidio/switches/idt_gen3.c
@@ -348,7 +348,7 @@ static void idtg3_shutdown(struct rio_dev *rdev)
 	}
 }
 
-static struct rio_device_id idtg3_id_table[] = {
+static const struct rio_device_id idtg3_id_table[] = {
 	{RIO_DEVICE(RIO_DID_IDTRXS1632, RIO_VID_IDT)},
 	{RIO_DEVICE(RIO_DID_IDTRXS2448, RIO_VID_IDT)},
 	{ 0, }	/* terminate list */
diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
index 7fbb60d31796..4058ce2c76fa 100644
--- a/drivers/rapidio/switches/idtcps.c
+++ b/drivers/rapidio/switches/idtcps.c
@@ -168,7 +168,7 @@ static void idtcps_remove(struct rio_dev *rdev)
 	spin_unlock(&rdev->rswitch->lock);
 }
 
-static struct rio_device_id idtcps_id_table[] = {
+static const struct rio_device_id idtcps_id_table[] = {
 	{RIO_DEVICE(RIO_DID_IDTCPS6Q, RIO_VID_IDT)},
 	{RIO_DEVICE(RIO_DID_IDTCPS8, RIO_VID_IDT)},
 	{RIO_DEVICE(RIO_DID_IDTCPS10Q, RIO_VID_IDT)},
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
index 8a43561b9d17..1214628b7ded 100644
--- a/drivers/rapidio/switches/tsi568.c
+++ b/drivers/rapidio/switches/tsi568.c
@@ -169,7 +169,7 @@ static void tsi568_remove(struct rio_dev *rdev)
 	spin_unlock(&rdev->rswitch->lock);
 }
 
-static struct rio_device_id tsi568_id_table[] = {
+static const struct rio_device_id tsi568_id_table[] = {
 	{RIO_DEVICE(RIO_DID_TSI568, RIO_VID_TUNDRA)},
 	{ 0, }	/* terminate list */
 };
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
index 2700d15f7584..9f063e214836 100644
--- a/drivers/rapidio/switches/tsi57x.c
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -336,7 +336,7 @@ static void tsi57x_remove(struct rio_dev *rdev)
 	spin_unlock(&rdev->rswitch->lock);
 }
 
-static struct rio_device_id tsi57x_id_table[] = {
+static const struct rio_device_id tsi57x_id_table[] = {
 	{RIO_DEVICE(RIO_DID_TSI572, RIO_VID_TUNDRA)},
 	{RIO_DEVICE(RIO_DID_TSI574, RIO_VID_TUNDRA)},
 	{RIO_DEVICE(RIO_DID_TSI577, RIO_VID_TUNDRA)},
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
index 74265b2f806c..8a8d952f8df9 100644
--- a/drivers/watchdog/watchdog_core.c
+++ b/drivers/watchdog/watchdog_core.c
@@ -137,25 +137,6 @@ int watchdog_init_timeout(struct watchdog_device *wdd,
 }
 EXPORT_SYMBOL_GPL(watchdog_init_timeout);
 
-static int watchdog_reboot_notifier(struct notifier_block *nb,
-				    unsigned long code, void *data)
-{
-	struct watchdog_device *wdd = container_of(nb, struct watchdog_device,
-						   reboot_nb);
-
-	if (code == SYS_DOWN || code == SYS_HALT) {
-		if (watchdog_active(wdd)) {
-			int ret;
-
-			ret = wdd->ops->stop(wdd);
-			if (ret)
-				return NOTIFY_BAD;
-		}
-	}
-
-	return NOTIFY_DONE;
-}
-
 static int watchdog_restart_notifier(struct notifier_block *nb,
 				     unsigned long action, void *data)
 {
@@ -244,19 +225,6 @@ static int __watchdog_register_device(struct watchdog_device *wdd)
 		}
 	}
 
-	if (test_bit(WDOG_STOP_ON_REBOOT, &wdd->status)) {
-		wdd->reboot_nb.notifier_call = watchdog_reboot_notifier;
-
-		ret = register_reboot_notifier(&wdd->reboot_nb);
-		if (ret) {
-			pr_err("watchdog%d: Cannot register reboot notifier (%d)\n",
-			       wdd->id, ret);
-			watchdog_dev_unregister(wdd);
-			ida_simple_remove(&watchdog_ida, wdd->id);
-			return ret;
-		}
-	}
-
 	if (wdd->ops->restart) {
 		wdd->restart_nb.notifier_call = watchdog_restart_notifier;
 
@@ -302,9 +270,6 @@ static void __watchdog_unregister_device(struct watchdog_device *wdd)
 	if (wdd->ops->restart)
 		unregister_restart_handler(&wdd->restart_nb);
 
-	if (test_bit(WDOG_STOP_ON_REBOOT, &wdd->status))
-		unregister_reboot_notifier(&wdd->reboot_nb);
-
 	watchdog_dev_unregister(wdd);
 	ida_simple_remove(&watchdog_ida, wdd->id);
 }
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 0826e663bd5a..1e971a50d7fb 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -42,6 +42,7 @@
 #include <linux/miscdevice.h>	/* For handling misc devices */
 #include <linux/module.h>	/* For module stuff/... */
 #include <linux/mutex.h>	/* For mutexes */
+#include <linux/reboot.h>	/* For reboot notifier */
 #include <linux/slab.h>		/* For memory functions */
 #include <linux/types.h>	/* For standard types (like size_t) */
 #include <linux/watchdog.h>	/* For watchdog specific items */
@@ -1016,6 +1017,25 @@ static struct class watchdog_class = {
 	.dev_groups =	wdt_groups,
 };
 
+static int watchdog_reboot_notifier(struct notifier_block *nb,
+				    unsigned long code, void *data)
+{
+	struct watchdog_device *wdd;
+
+	wdd = container_of(nb, struct watchdog_device, reboot_nb);
+	if (code == SYS_DOWN || code == SYS_HALT) {
+		if (watchdog_active(wdd)) {
+			int ret;
+
+			ret = wdd->ops->stop(wdd);
+			if (ret)
+				return NOTIFY_BAD;
+		}
+	}
+
+	return NOTIFY_DONE;
+}
+
 /*
  *	watchdog_dev_register: register a watchdog device
  *	@wdd: watchdog device
@@ -1049,6 +1069,18 @@ int watchdog_dev_register(struct watchdog_device *wdd)
 	if (ret) {
 		device_destroy(&watchdog_class, devno);
 		watchdog_cdev_unregister(wdd);
+		return ret;
+	}
+
+	if (test_bit(WDOG_STOP_ON_REBOOT, &wdd->status)) {
+		wdd->reboot_nb.notifier_call = watchdog_reboot_notifier;
+
+		ret = devm_register_reboot_notifier(dev, &wdd->reboot_nb);
+		if (ret) {
+			pr_err("watchdog%d: Cannot register reboot notifier (%d)\n",
+			       wdd->id, ret);
+			watchdog_dev_unregister(wdd);
+		}
 	}
 
 	return ret;